Inability to access OU with ampersand sign (&) in its name

[pokotilenko]

Describe the bug

PLA is not able to access OU with ampersand sign (&) in its name. Child objects of such OU are not accessible too. This is probably not limited to OUs.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://old-demo.phpldapadmin.org, log-in as admin
2. Click on dc=example.com
3. Click on Create a child entry
4. Select Generic: Organisational Unit
5. Enter Test OU and click Create Object, then click Commit
6. Click on Create a child entry
7. Select Generic: Organisational Unit
8. Enter Ampersand & Fun and click Create Object, then click Commit
9. You already see error message No such entry (ou=Ampersand & Fun,ou=Test OU,dc=example.com)
10. Click Refresh
11. Expand Test OU
12. You can see Ampersand & Fun OU under Test OU OU which is expected
13. Now if you click on Ampersand & Fun to open it you get same error No such entry (ou=Ampersand & Fun,ou=Test OU,dc=example.com)

Expected behavior

Newly created OU with ampersand in its name successfully opens after creation and later by clicking on it in a tree.

Screenshots

Desktop (please complete the following information):

• OS: ALL
• Browser ALL
• Version ALL

[bendem]

Too aggressive escaping strikes again. The values that PLA receives are immediately escaped before any other processing, which causes this. The correct fix would be to only escape when displaying them, but that's going to be very hard to do this without regressions.